BGS mineralogy and petrology collection record

Sample number E11945
Sample Donor Road Board
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments Not entered
Locality details Rhiwgoch Silica Qry. & Mine, Blaneau Ffestiniog
50k map sheet Snowdon (119)

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Map reference
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


Cross Polarized, E11945

Plane Polarized, E11945

Plane Polarized, E11945